A prisoner in the Inquisition is never allowed to see the face of his accuser, or of the witnesses against him, but every method is taken by threats and tortures, to oblige him to accuse himself, and by that means corroborate their evidence. ↗
To be a prisoner means to be defined as a member of a group for whom the rules of what can be done to you, of what is seen as abuse of you, are reduced as part of the definition of your status. ↗
Otherwise, to be a movie star, it's a lot of compromise and also a lot of headaches. You can't do what you want. You become a prisoner of your fame. This happened to me in France and I don't want it. ↗
An artist must never be a prisoner. Prisoner? An artist should never be a prisoner of himself, prisoner of style, prisoner of reputation, prisoner of success, etc. ↗